var createError = require('http-errors')
var express = require('express')
var path = require('path')
var cookieParser = require('cookie-parser')
var logger = require('morgan')

var indexRouter = require('./routes/index')
var usersRouter = require('./routes/users')
const UserRouter = require('./routes/admin/UserRouter')
const NewsRouter = require('./routes/admin/NewsRouter')
const ProductRouter = require('./routes/admin/ProductRouter')
const webNewsRouter = require('./routes/web/NewsRouter')
const webProductRouter = require('./routes/web/ProductRouter')
const JWT = require('./util/JWT')

var app = express()

// view engine setup
app.set('views', path.join(__dirname, 'views'))
app.set('view engine', 'jade')

app.use(logger('dev'))
app.use(express.json())
app.use(express.urlencoded({ extended: false }))
app.use(cookieParser())
app.use(express.static(path.join(__dirname, 'public')))

app.use('/', indexRouter)
app.use('/users', usersRouter)

/* 
/adminAPI/* - 后台系统
/webAPI/*   - 企业官网
*/
app.use(webNewsRouter) //web端不能放在token校验后面
app.use(webProductRouter)
//token校验
app.use((req, res, next) => {
  // 访问登录页面直接放行
  if (req.url === '/adminapi/user/login') {
    next()
    return
  }

  const token = req.headers['authorization'].split(' ')[1]
  if (token) {
    const payload = JWT.verify(token)

    // console.log(payload)
    // token有效
    if (payload) {
      const newToken = JWT.generate(
        {
          _id: payload._id,
          username: payload.username
        },
        '12h'
      )
      res.header('Authorization', newToken)
      next()
    } else {
      res.status(401).send({ errCode: '-1', errorInfo: 'token过期' })
    }
    // token过期
  }
})
app.use(UserRouter)
app.use(NewsRouter)
app.use(ProductRouter)

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404))
})

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message
  res.locals.error = req.app.get('env') === 'development' ? err : {}

  // render the error page
  res.status(err.status || 500)
  res.render('error')
})

module.exports = app
